when you get a boner sitting down and have to stand up and the tent would be obvious. Flip Mode is a move where you move the boner from the down/poking out postion to the up position resting between your belt and your stomach. should be done to do this in one motion so it looks like you are just standing up.

paul- I was staring at katy's legs in class today and mrs. beltson called on me to go to the board
steve- oh shit
paul- its cool I went into flip mode and did the problem
steve- yeah i have to go into flip mode 'bout three times a day. have you ever been caught?
paul- nah, i got that move down like 1st floor to basement

changing ones behavior to methods or ways that one is well aquinted with but rarely ever shows out either due to social conflicts inherent in being public or because one would not choose to use those methods but does what they gotta do.